unit-tests: ignore unused argc/argv

All of the unit test programs have their own cmd_main() function, but
none of them actually look at the argc/argv that is passed in.

In the long run we may want them to handle options for the test harness.
But we'd probably do that with a shared harness cmd_main(), dispatching
to the individual tests. In the meantime, let's annotate the unused
parameters to avoid triggering -Wunused-parameter.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/unit-tests/t-ctype.c

@@ -33,7 +33,7 @@
 	"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" \
 	"\x7f"
 
-int cmd_main(int argc, const char **argv) {
+int cmd_main(int argc UNUSED, const char **argv UNUSED) {
 	TEST_CHAR_CLASS(isspace, " \n\r\t");
 	TEST_CHAR_CLASS(isdigit, DIGIT);
 	TEST_CHAR_CLASS(isalpha, LOWER UPPER);

t/unit-tests/t-hash.c

@@ -38,7 +38,7 @@ static void check_hash_data(const void *data, size_t data_length,
 		     "SHA1 and SHA256 (%s) works", #literal); \
 	} while (0)
 
-int cmd_main(int argc, const char **argv)
+int cmd_main(int argc UNUSED, const char **argv UNUSED)
 {
 	struct strbuf aaaaaaaaaa_100000 = STRBUF_INIT;
 	struct strbuf alphabet_100000 = STRBUF_INIT;

t/unit-tests/t-mem-pool.c

@@ -20,7 +20,7 @@ static void t_calloc_100(struct mem_pool *pool)
 	check(pool->mp_block->end != NULL);
 }
 
-int cmd_main(int argc, const char **argv)
+int cmd_main(int argc UNUSED, const char **argv UNUSED)
 {
 	TEST(setup_static(t_calloc_100, 1024 * 1024),
 	     "mem_pool_calloc returns 100 zeroed bytes with big block");

t/unit-tests/t-prio-queue.c

@@ -69,7 +69,7 @@ static void test_prio_queue(int *input, size_t input_size,
 #define TEST_INPUT(input, result) \
 	test_prio_queue(input, ARRAY_SIZE(input), result, ARRAY_SIZE(result))
 
-int cmd_main(int argc, const char **argv)
+int cmd_main(int argc UNUSED, const char **argv UNUSED)
 {
 	TEST(TEST_INPUT(((int []){ 2, 6, 3, 10, 9, 5, 7, 4, 5, 8, 1, DUMP }),
 			((int []){ 1, 2, 3, 4, 5, 5, 6, 7, 8, 9, 10 })),

t/unit-tests/t-reftable-basics.c

@@ -145,7 +145,7 @@ static void test_u16_roundtrip(void)
 	check_int(in, ==, out);
 }
 
-int cmd_main(int argc, const char *argv[])
+int cmd_main(int argc UNUSED, const char *argv[] UNUSED)
 {
 	TEST(test_common_prefix(), "common_prefix_size works");
 	TEST(test_parse_names_normal(), "parse_names works for basic input");

t/unit-tests/t-reftable-merged.c

@@ -452,7 +452,7 @@ static void t_default_write_opts(void)
 }
 
 
-int cmd_main(int argc, const char *argv[])
+int cmd_main(int argc UNUSED, const char *argv[] UNUSED)
 {
 	TEST(t_default_write_opts(), "merged table with default write opts");
 	TEST(t_merged_logs(), "merged table with multiple log updates for same ref");

t/unit-tests/t-reftable-pq.c

@@ -142,7 +142,7 @@ static void t_merged_iter_pqueue_top(void)
 	merged_iter_pqueue_release(&pq);
 }
 
-int cmd_main(int argc, const char *argv[])
+int cmd_main(int argc UNUSED, const char *argv[] UNUSED)
 {
 	TEST(t_pq_record(), "pq works with record-based comparison");
 	TEST(t_pq_index(), "pq works with index-based comparison");

t/unit-tests/t-reftable-record.c

@@ -532,7 +532,7 @@ static void t_reftable_index_record_roundtrip(void)
 	strbuf_release(&in.u.idx.last_key);
 }
 
-int cmd_main(int argc, const char *argv[])
+int cmd_main(int argc UNUSED, const char *argv[] UNUSED)
 {
 	TEST(t_reftable_ref_record_comparison(), "comparison operations work on ref record");
 	TEST(t_reftable_log_record_comparison(), "comparison operations work on log record");

t/unit-tests/t-reftable-tree.c

@@ -75,7 +75,7 @@ static void t_infix_walk(void)
 	tree_free(root);
 }
 
-int cmd_main(int argc, const char *argv[])
+int cmd_main(int argc UNUSED, const char *argv[] UNUSED)
 {
 	TEST(t_tree_search(), "tree_search works");
 	TEST(t_infix_walk(), "infix_walk works");

t/unit-tests/t-strbuf.c

@@ -105,7 +105,7 @@ static void t_addstr(struct strbuf *buf, const void *data)
 	check_str(buf->buf + orig_len, text);
 }
 
-int cmd_main(int argc, const char **argv)
+int cmd_main(int argc UNUSED, const char **argv UNUSED)
 {
 	if (!TEST(t_static_init(), "static initialization works"))
 		test_skip_all("STRBUF_INIT is broken");

t/unit-tests/t-strcmp-offset.c

@@ -24,7 +24,7 @@ static void check_strcmp_offset(const char *string1, const char *string2,
 				 expect_offset),                           \
 	     "strcmp_offset(%s, %s) works", #string1, #string2)
 
-int cmd_main(int argc, const char **argv)
+int cmd_main(int argc UNUSED, const char **argv UNUSED)
 {
 	TEST_STRCMP_OFFSET("abc", "abc", 0, 3);
 	TEST_STRCMP_OFFSET("abc", "def", -1, 0);

t/unit-tests/t-strvec.c

@@ -227,7 +227,7 @@ static void t_detach(void)
 	free(detached);
 }
 
-int cmd_main(int argc, const char **argv)
+int cmd_main(int argc UNUSED, const char **argv UNUSED)
 {
 	TEST(t_static_init(), "static initialization");
 	TEST(t_dynamic_init(), "dynamic initialization");

t/unit-tests/t-trailer.c

@@ -308,7 +308,7 @@ static void run_t_trailer_iterator(void)
 	}
 }
 
-int cmd_main(int argc, const char **argv)
+int cmd_main(int argc UNUSED, const char **argv UNUSED)
 {
 	run_t_trailer_iterator();
 	return test_done();